Rating: 5 / 5
I have to differ from Patrick regarding the comparison to the Patagonia R1 Hoody. Yes, both hoodies have a number of excellent features in common - hood, half zip, long cut body, long cut thumbhole sleeves. I still find them very different. The R1 is much warmer and has in my opinion a much superior cut and fit - on me the Patagonia is form fitting on the torso, and the hood has that excellent snug balaclava fit Patrick is trying to achieve with his Impulse. In both areas the Impulse is quite loose.
OTOH: I bought the Impulse and didn't buy the R1. Nice as the R1 is, I have difficulty imagining any active scenario for me where it wouldn't be too warm. Whereas the Impulse turns out to be a perfect light mid-layer for high exertion cold-weather activities. I wear it for snowboarding and winter biking, over a closer fitting baselayer and under a hooded softshell, and rarely feel the need for anything more when I'm on the move.
I find hooded shirt and shell, together with a buff and a fleece (R1) headband, make a super cosy layering system for my head that eliminates the need for a big balaclava or hat.
Pros: most of the above
Cons: cut of torso and hood a bit loose.